When I'm in a complex "new to me" tower
controlled airport and not being fortunate enough to have a high dollar Garmin
496 or MX20 type MFD in my panel with taxi diagrams, I'm not bashful about
asking Ground Control for progressive taxi instructions. It's takes just a few
moments to make this request and I've never ever gotton so much as a sigh from
any of the ground controllers at some busy places.

Here's the official FAA definition of a
"runway incursion":

"Any occurrence at an aerodrome involving
the incorrect presence of an aircraft, vehicle or person on the protected area
of a surface designated for the landing and take off of aircraft."